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155 lines
6.2 KiB
155 lines
6.2 KiB
/*
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This file is part of Akregator.
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Copyright (C) 2004 Sashmit Bhaduri <smt@vfemail.net>
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2005 Frank Osterfeld <frank.osterfeld at kdemail.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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As a special exception, permission is given to link this program
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with any edition of Qt, and distribute the resulting executable,
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without including the source code for Qt in the source distribution.
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*/
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#ifndef ARTICLEVIEWER_H
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#define ARTICLEVIEWER_H
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#include <klocale.h>
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#include <qcolor.h>
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#include <qfont.h>
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#include "article.h"
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#include "articlefilter.h"
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#include "viewer.h"
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class QKeyEvent;
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namespace Akregator
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{
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class Feed;
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class Folder;
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class TreeNode;
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/** This HTML viewer is used to display articles.
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Use the high-level interface provided by the public slots whereever possible (and extend them when necessary instead of using low-level methods).*/
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class ArticleViewer : public Viewer
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{
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Q_OBJECT
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public:
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/** Constructor */
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ArticleViewer(QWidget* parent, const char* name);
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virtual ~ArticleViewer();
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virtual bool openURL(const KURL &url);
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/** Repaints the view. */
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void reload();
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void displayAboutPage();
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public slots:
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// Commandment: We are your interfaces.
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// You shall not use strange interfaces before us.
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/** Show single article (normal view)
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@param article the article to render */
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void slotShowArticle(const Article& article);
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/** Shows the articles of the tree node @c node (combined view). Changes in the node will update the view automatically.
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@param node The node to observe */
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void slotShowNode(TreeNode* node);
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/** Set filters @c textFilter and @c statusFilter which will be used if the viewer is in combined view mode
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@param textFilter text filter
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@param statusFilter status filter */
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void slotSetFilter(const Akregator::Filters::ArticleMatcher& textFilter, const Akregator::Filters::ArticleMatcher& statusFilter);
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/** Update view if combined view mode is set. Has to be called when the displayed node gets modified. */
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void slotUpdateCombinedView();
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/** Clears the canvas and disconnects from the currently observed node (if in combined view mode). */
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void slotClear();
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void slotShowSummary(TreeNode *node);
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virtual void slotPaletteOrFontChanged();
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protected slots:
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void slotArticlesUpdated(TreeNode* node, const QValueList<Article>& list);
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void slotArticlesAdded(TreeNode* node, const QValueList<Article>& list);
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void slotArticlesRemoved(TreeNode* node, const QValueList<Article>& list);
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protected:
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virtual void keyPressEvent(QKeyEvent* e);
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virtual void urlSelected (const QString &url, int button, int state, const QString &_target, KParts::URLArgs args);
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public: // compat with KDE-3.x assertions, remove for KDE 4
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// private:
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friend class ShowNodeSummaryVisitor;
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class ShowSummaryVisitor;
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ShowSummaryVisitor* m_showSummaryVisitor;
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/** renders @c body. Use this method whereever possible.
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@param body html to render, without header and footer */
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void renderContent(const QString& body);
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/** Takes an article and renders it as HTML with settings for normal view and widescreen view
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@param feed article's feed (used for feed icon atm) -- article.feed() would do. better use a (No)Icon flag. -fo
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@param article The article to render
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@return the rendered article as HTML */
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QString formatArticleNormalMode(Feed* feed, const Article& article);
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/** Takes an article and renders it as HTML with settings for combined view
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@param feed article's feed (used for feed icon atm) -- article.feed() would do. better use a (No)Icon flag. -fo
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@param article The article to render
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@return the rendered article as HTML */
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QString formatArticleCombinedMode(Feed* feed, const Article& article);
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/** Resets the canvas and adds writes the HTML header to it.
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*/
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void beginWriting();
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/** Finishes writing to the canvas and completes the HTML (by adding closing tags) */
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void endWriting();
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/** generates the CSS used for rendering in single article mode (normal and wide screen view) */
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void generateNormalModeCSS();
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/** generates the CSS for combined view mode */
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void generateCombinedModeCSS();
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void connectToNode(TreeNode* node);
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void disconnectFromNode(TreeNode* node);
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QString m_normalModeCSS;
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QString m_combinedModeCSS;
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QString m_htmlFooter;
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QString m_currentText;
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KURL m_imageDir;
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TreeNode* m_node;
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Article m_article;
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KURL m_link;
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Akregator::Filters::ArticleMatcher m_textFilter;
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Akregator::Filters::ArticleMatcher m_statusFilter;
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enum ViewMode { NormalView, CombinedView, SummaryView };
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ViewMode m_viewMode;
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};
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}
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#endif // ARTICLEVIEWER_H
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